Calculate width or height keeping the aspect ratio.
Free · Runs in your browser · Last updated
Lock an aspect ratio (16:9, 4:3, 1:1 or custom) and solve for width or height. Find the ratio of any two dimensions.
All processing for Aspect Ratio happens locally inside your browser using JavaScript. Your input is never uploaded to a server, logged, or shared with third parties.
Yes. Aspect Ratio is completely free for both personal and commercial projects. There are no usage limits, no sign-up, and no premium tier.
All processing happens locally in your browser using JavaScript. Your input is never uploaded to our servers, logged, or shared with any third party.
Once the page has loaded, the tool runs entirely client-side. You can disconnect from the internet and it will keep working in the same browser tab.
Aspect Ratio works in all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, Brave, and Opera, on desktop and mobile.
No. Aspect Ratio runs in any modern web browser with no installation, browser extension, or account required.